Acoustic guitar



FIG. 1 is a front view of an acoustic guitar showing my new design.

FIG. 2 is a rear view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a top view thereof.

FIG. 6 is a bottom view thereof.

FIG. 7 is a front, left, and bottom side perspective view thereof; and,

FIG. 8 is a rear, right and to side perspective view thereof. 

CLAIM The ornamental design for an acoustic guitar, as shown and described. 